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JEE Main Chemistry question

ChemistryAldehydes, Ketones and Carboxylic AcidsJEE Main

Given (I) phenol, (II) p-chlorophenol, (III) benzoic acid, (IV) p-methylbenzoic acid, the correct acidity order is

Answer: (A)

Solution

Carboxylic acids (pKa ≈ 4) are intrinsically far more acidic than phenols (pKa ≈ 10), so both (III) and (IV) outrank both (I) and (II). Within the acids, the electron-donating p-methyl group in (IV) destabilizes the

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Question ID VK-139053